Mar. 8, 2026 Asteroids with tiny moons may be quietly trading material across space. Images from NASA’s DART mission revealed faint streaks on the moon Dimorphos—evidence of slow “cosmic snowballs” ..

Tuning into the U.S. Open tennis tournament? Then you might be wondering exactly how far does a professional tennis player actually run during a match? It sure looks like a lot of work chasing balls ...